| Regimental number | 2225 |
| Place of birth | Birkenhead South Australia |
| Religion | Presbyterian |
| Occupation | Carpenter |
| Address | Birkenhead, South Australia |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Mother, Mrs Mary Sinclair, Craigie Street, Birkenhead, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 3rd Light Horse Regiment, 15th Reinforcement |
| AWM Embarkation Roll number | 10/8/4 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A68 Anchises on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 13th Field Artillery Brigade |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Plaque in South Australian Garden of Remembrance |
| Family/military connections | Brother: 2014 Sapper James Haining SINCLAIR, 5th Divisional Signal Company, killed in action, 31 July 1917. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Date of death |